import { StorageOptions } from "@google-cloud/storage";
import * as fsDefault from "node:fs";
import { BaseDocumentLoader } from "@langchain/core/document_loaders/base";
import { Document } from "@langchain/core/documents";
import { UnstructuredLoaderOptions } from "../fs/unstructured.js";
/**
 * Represents the parameters for the GoogleCloudStorageLoader class. It includes
 * properties such as the GCS bucket, file destination, the options for the UnstructuredLoader and
 * the options for Google Cloud Storage
 */
export type GcsLoaderConfig = {
    fs?: typeof fsDefault;
    bucket: string;
    file: string;
    unstructuredLoaderOptions: UnstructuredLoaderOptions;
    storageOptions?: StorageOptions;
};
/**
 * A class that extends the BaseDocumentLoader class. It represents a
 * document loader for loading files from a google cloud storage bucket.
 * @example
 * ```typescript
 * const loader = new GoogleCloudStorageLoader({
 *   bucket: "<my-bucket-name>",
 *   file: "<file-path>",
 *   storageOptions: {
 *     keyFilename: "<key-file-name-path>"
 *   }
 *   unstructuredConfig: {
 *     apiUrl: "<unstructured-API-URL>",
 *     apiKey: "<unstructured-API-key>"
 *   }
 * });
 * const docs = await loader.load();
 * ```
 */
export declare class GoogleCloudStorageLoader extends BaseDocumentLoader {
    private bucket;
    private file;
    private storageOptions;
    private _fs;
    private unstructuredLoaderOptions;
    constructor({ fs, file, bucket, unstructuredLoaderOptions, storageOptions, }: GcsLoaderConfig);
    load(): Promise<Document<Record<string, any>>[]>;
}